The 28cm² four-junction mini module 'Power Cube' achieved a record-breaking conversion efficiency of 34.5%. Source: NREL Engineers at the University of New South Wales have developed a new solar cell configuration that has achieved a sunlight-to-electricity conversion efficiency of 34.5% - constituting a new world record. The record was set using a 28cm² four-junction mini module embedded within a prism, dubbed the ‘Power Cube’. The project was supported by A$1.4 million in funding from ARENA . The new result, confirmed by the US National Renewable Energy Laboratory (NREL), is almost 44% better than the previous record, which reached 24% efficiency, but over a larger surface area of 800-cm². Tags: arena , australia , cell efficiency , efficiency record , nrel